5421947 has 2 divisors, whose sum is σ = 5421948. Its totient is φ = 5421946.

The previous prime is 5421919. The next prime is 5422003. The reversal of 5421947 is 7491245.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5421947 - 2¹⁰ = 5420923 is a prime.

It is not a weakly prime, because it can be changed into another prime (5421907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2710973 + 2710974.

It is an arithmetic number, because the mean of its divisors is an integer number (2710974).

Almost surely, 2^5421947 is an apocalyptic number.

5421947 is a deficient number, since it is larger than the sum of its proper divisors (1).

5421947 is an equidigital number, since it uses as much as digits as its factorization.

5421947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 32.

The square root of 5421947 is about 2328.5074618734. The cubic root of 5421947 is about 175.6784223444.

The spelling of 5421947 in words is "five million, four hundred twenty-one thousand, nine hundred forty-seven".